Sinks Canyon State Park is comprised of the main attraction, the Sinks and Rise. The Popo Agie river flows into the sinks, where it is thought that the water takes two hours to circulate through limestone caverns and reappear in the Rise. The park is located in Fremont County, six miles south of Lander on Hwy 131. The park is also home to much of Wyoming's natural wildlife. Thick, coniferous forests filled with Douglas Fir and Limber Pine make up a large section of the park. This slope faces north in the winter, allowing huge amounts of snow to build up over the months, and that is why this part of the park is so moist and temperate in the summer, compared to the dry sagebrush and juniper blanketing the southern slope. Bighorn Sheep, Mule Deer, and Golden Eagles are often seen around the park. Throughout the summer on appointed dates naturalists lead nature walks, explaining the flora, fauna, river, and natural features of the park.